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            WHA-410

            WHA-410 is also a fine pore aluminum oxide,white powder.This product is used as gel of catalyst carrier coating film for the purification of auto-emission gas.Its performance is equivalent to the level of SB powder made in Germany and the gel used for catalyst carrier for the purification of auto-emission gas made in U.S.A.Some indexes are even superior than them.
            Main technical indexes:
            1.Chemical formula: Al2O3.nH2O(n=1.2-1.8)
            2.Crystalline phase:Pseudo boehmite
            3.Physicochemical indexes:
             

            Al2O3 ≥75%
            Fe2O3 ≤0.07%
            Na2O ≤0.07%
            Pore volume 550°C,3h) cm3/g ≥0.38
            Specific surface area (550°C,3h) m2/g ≥300
            Pore distribution  30A-80A(550°C,3h) ≥80%
            Loss of ignition   % ≤23%
            r-Al2O3  (900°C 2h) % ≥98%
            Pore volume   (900°C,3h) cm3/g ≥0.45
            Specific surface area   (900°C,3h) m2/g ≥200
            Pore distribution  30A-100A (900°C,3hr) ≥80%
            Particle size 325-1000(Mesh) 350-1000
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